ALEXANDRIA, Va., June 18 -- United States Patent no. 12,325,033, issued on June 10.
"Method for fixing a metal sheet and filter device produced therewith" was invented by Guntram Krettek (Viersen, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method for fixing a metal sheet serving as a filter element or the like to the inner peripheral wall of a filter device is disclosed. The metal sheet is arranged in a round shape, optionally with overlapping axial edge regions, on the inner peripheral wall of the housing of the filter device and is pressed against the peripheral wall of the housing with the aid of an expansion device. The disclosure further relates to a filter device produced in this way and ...